1, Golden Secret Series is the highest-end and most advanced professional anti-wrinkle skin care products series of tst. This series of products has 30 patents, including 4 Korean patents and 4 world patents. R&D has large investment and high technical level of products.
2. According to the verification of a third-party laboratory and 30 subjects aged 30-45, after 28 days' use of gold secret key series products, the skin's moisturizing degree, firmness and elasticity increased by 78.6%, 57.5% and 87.3% respectively. The data used in the product laboratory stage are valid.